Added Medias code and documentation

Added media.less and edited bootstrap.less and responsive.less to manage media components.

Added a section to the documentation (Media, in components.html) outlining how Medias work. Edited bootstrap.css and bootstrap-responsive.css to add the code for the demos

Signed-off-by: Giuliano Velli <wpbrains@giusi.org>
Added Medias code and documentation

Fix for Issue #1711

Added media.less and edited bootstrap.less and responsive.less to
manage media components.

Added a section to the documentation (Media, in components.html) outlining how Medias work. Edited bootstrap.css and bootstrap-responsive.css to add the code for the demos

Signed-off-by: Giuliano Velli <wpbrains@giusi.org>
Merge branch 'media-component' of github.com:wpbrains/bootstrap into media-component

Conflicts:
	docs/components.html

Signed-off-by: Giuliano Velli <wpbrains@giusi.org>
Alter typeahead to accept synchronous/asynchronous data source via function/callback
Gradient mixins blow up in IE7/8 if you happen to use rgba() colors as params
modal accessibility tab control
Merge branch 'master' into 2.0.4-wip
add proper role to dialog markup and cleanup modal logging
nearly everything working with activedescendant... then decide it's wrong.
abandon activedescendant because it was awful
remove log
Merge branch 'accessibility' into 2.1.0-wip

Conflicts:
	docs/assets/js/bootstrap.min.js
	docs/javascript.html
	docs/templates/pages/javascript.mustache
add collapsed class to collapse invoker when it's target is collapsed #3525
rebuild doi
add html option back to tooltip and popover to explicitly prevent XSS #3421
remove isHTML support
add relatedTarget to carousel slide event
rebuild assets
upgrade jquery to 1.7.2 #3379
add link to phantomjs in docs #3347